ClassNotFound error

[Rupak Kundu]

Hello everyone 

I have compiled the GEMM program successfully.

I have written a simple code from tutorials page " Hello Spatial" under section " DRAMS and transfers" . I changed the object name HelloSpatial and kept the rest of code unchanged. 

On run bin/spatial I get the error ClassNotFoundException.

how can I resolve it ? 

Rupak

 

[stan...@stanford.edu]

Hi Rupak,

Are you in the right path for your project? bin/spatial is sensitive to the location of your project.

Thanks,

Nathan

[Rupak Kundu]

Hii 

This is first program on spatial. I have created a file Drmt.scala in path Spatial-quickstart/src/main/scala. . 

I have tried compiling the file from 2 paths

1) from spatial-quiackstart. Using bin/spatial src/main/scala/drmt.scala. This gives the class not found error (i mentioned in previous message). I am using the same source code from Spatial tutorial (section DRAMS and transfers) . I have put object name as Drmt. I am unable to compile it due to above error. I am able t compile already provided GEMM.scala using same process. I am new to JAVA/Scala also. 

2) I tried compiling from path of source code src/main/scala/drmt.scala . This is not compiling says object spatial not found.  GEMM is also not cmpiling using this prcess.

I am stuck. I appreciate any help regarding this.

Thanks for your time.

Rupak

[Matt Feldman]

Hi Rupak,

I was trying to reproduce this problem.  Can you let me know where I went wrong?

Created the following file ~/spatial-quickstart/src/main/scala/drmt.scala:

```

import spatial.dsl._

@spatial object drmt extends SpatialApp {

  def main(args: Array[String]): Void = {

    // Create DRAM (malloc)

    val d = DRAM[Int](16)

    // Set DRAM (memcpy)

    val data = Array.fill[Int](16)(0)

    setMem(d, data)

    Accel {

      // Create 16-element SRAM

      val s = SRAM[Int](16)

      // Transfer data from d to s

      s load d(0::16)

      // Add number to each element

      Foreach(16 by 1){i => s(i) = s(i) + i}

      // Transfer data back to d

      d(0::16) store s

    }

    

    // Print contents in memory

    printArray(getMem(d), "Result: ")

  }

}

```

cd ~/spatial-quickstart

bin/spatial drmt --sim

This compiled the app.  When you said you used "bin/spatial src/main/scala/drmt.scala", you you mean you ran this command verbatim?  I was able to confirm the error is the "class not found exception" if this is the case.  Or did running "bin/spatial drmt" actually fail to find the class, in which case I did something wrong here?

Thanks,

Matt

[Rupak Kundu]

Hi Matt 

thanks !! so I was running command verbatim (thats what I had done for GEMM and Hello world application) . When I ran the command without .scala it runs successfully..

Thanks Rupak